diff --git a/README.md b/README.md
index 20047c8a..cbfd58f9 100644
--- a/README.md
+++ b/README.md
@@ -16,3 +16,5 @@ Since rules_js always runs tools from the bazel-out tree, rules_ts naturally fix
 From the release you wish to use:
 <https://github.com/aspect-build/rules_ts/releases>
 copy the WORKSPACE snippet into your `WORKSPACE` file.
+
+Please note that rules_ts does not work with `--worker_sandboxing`.